Abstract
The temporal distribution of an isolate of the dagger nematode attacking Aleppopine, Pinus halepensis grown in AL-Jubiha area in Jordan was investigated. A totalof eighteen samples were collected from rhizosphere about 30 cm deep in soil and50 cm away from the trunk of a Pine tree showing decline and brown needles asone sample per month starting in November 2014 until April 2016. Cobb sievingand gravity methods were used for the nematode isolation from rhizosoil. The soiltype is clay with 51 % porosity. The monthly air temperature, precipitation, andrelative humidity were monitored and tabulated. The results showed that thenumber of recovered nematodes ranged from 2 individuals /100 cm3 to 88individuals /100cm3 of rhizosoil. The lowest number was recovered on Octoberwhereas the highest numbers were recovered in December. The reason of declinein numbers may be due to a raise in temperature. The highest number may be dueto favorable temperature and soil moisture. The difference of nematode in samemonth in two different years may be due to the temperature and precipitations.
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